Rexroth IndraDrive Fusing and Selecting the Mains Contactor 13-1
DOK-INDRV*-SYSTEM*****-PR02-EN-P
13 Fusing and Selecting the Mains Contactor
13.1 Fusing and Selecting the Mains Contactor for Mains
Connection
The data below are recommended values applying under the conditions
that
• the listed devices are operated with individual supply.
• the performance data are not exceeded.
• the line cross sections according to EN60204 - installation type B1 (or
E for mains currents higher than 100A) - are to be selected without
taking correction factors into account.
• easily separable contact-welded connections at the contactor are
allowed after a short-circuit which corresponds to assignment type "2"
according to DIN IEC 60947-4.
Applications deviating from these conditions require detailed calculation of
the mains connection values.
If several drive controllers are to be operated at one fuse and one mains
contactor, the mains-side phase currents and inrush currents calculated
for the individual drives have to be added.
CAUTION
Damage to the drive controller caused by
overload!
⇒
Make sure the specified performance data - peak
power and continuous power - are complied with by
correct drive dimensioning and selective fusing in the
mains connection.
Note: Fuses of characteristic gR protect the involved
semiconductors against further damage in the case of short
circuit.
Fuses of characteristic gL protect the lines.
For the switch-off delay of the mains contactor see the
technical data of the selected type. Take into account that
additional components at the operating coil cause changes in
the switch-off delay.
By way of example, the selection table shows types of certain
manufacturers. Equivalent products by other manufacturers may be used
as well.
Note: In order to prevent the mains contactor from being overloaded
by the load current in the case of frequent cut-off, it is first
necessary to switch off the drive, e.g. via the drive enable in
the master communication, and then to switch off the mains
contactor.